Hi viewers, this is my third post on Trig Identities, I am fed up with this topic, anyways lets start, many still complain that they still face challenges with trig identities, so I pick some difficult(complex) questions for us to solve. Remember if you haven't read my previous posts try to check them out.
Now lets begin

1. Prove 1+cosx/1-cosx ➕ 1-cosx/1+cosx = 4cot²x +2
Solution.
When u see a fraction you try your best to get a common denominator which in this case we need to find the lowest common multiple (LCM). When there is nothing common in your denominators;the lcm is the product of the denominator.

(1+cosx)(1+cosx) ➕ (1-cosx)(1-cosx) /(1+cosx)(1-cosx)...continue reading at www.scienceteachinglair..com

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